P89CV51RD2 Datasheet | NXP Semiconductors

description The P89CV51RB2/RC2/RD2 are three types of 80C51 microcontroller with respectively 16 k B/32 k B/64 k B flash and 1 k B of data RAM. These devices are designed to be drop-in and software-patible replacements for the popular P89C51RB2/RC2/RD2 devices. Both the In-System Programming (ISP) and In-Application Programming (IAP) boot codes are upward patible. Additional features of the P89CV51RB2/RC2/RD2 devices pared to the P89C51RB2/RC2/RD2 are the inclusion of an SPI interface, larger RAM size, and the ability to erase code memory in 128-B page blocks. The IAP capability bined with the 128-B page size allows for efficient use of the code memory for non-volatile data storage. 2. Features 2.1 Principal features I Supports 12-clock (default) or 6-clock mode selection via ISP or parallel programmer I 6-clock/12-clock mode programmable “on-the-fly” by an SFR bit I Peripherals (PCA, timers, UART) may use either 6-clock or 12-clock mode while the CPU is in 6-clock mode I 128-B page erase for efficient use of code memory as non-volatile data storage I 0 MHz to 40 MHz operating frequency in 12× mode, 20 MHz in 6× mode I 16/32/64 k B of on-chip flash user-code memory with ISP and IAP I 1 k B RAM I SPI (Serial Peripheral Interface) and enhanced UART I PCA (Programmable Counter Array) with PWM and capture/pare functions I Three 16-bit timers/counters 2.2 Additional features I Four 8-bit I/O ports I Watch Dog Timer (WDT) I 30 ms page erase, 150 ms block erase I PLCC44 and TQFP44 packages I Ten interrupt sources with four priority levels I Second DPTR register I Low EMI mode (ALE inhibit) NXP Semiconductors P89CV51RB2/RC2/RD2 80C51 with 1 k B RAM, SPI I Power-down mode with external interrupt wake-up I Idle mode 2.3 parison to P89C51RB2/RC2/RD2 devices I SPI: The P89CV51RB2/RC2/RD2 devices have an SPI interface that was not present on the P89C51RB2/RC2/RD2 devices. I Smaller block size: The page size decreased from 4 k B to 128 B. These smaller pages can be erased and reprogrammed...